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Honey Yellow, Raspberry Red, Sapphire Blue or Moss Green are very appealing and descriptive color names. But are you sure that every person means the same color by it? Usually not. How do you clearly describe a color and guarantee that same color over time?

Our color perception is dependent on our individual “taste,” which is influenced by our mood, gender, age, but also the light source used, the viewing environment being light or dark, neutral or colorful as well as our deficiency to exactly remember and communicate one specific color. More…

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Have you heard someone say they were using either a sphere or 45/0 color instrument or spectrophotometer to measure color? Did you know there were two types of geometries? What’s the difference? ­More…

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In the color industry, there are two classes of instrumentation based on their geometry that are used to measure color: “45/0” and “Sphere”.

45/0 Color Instrument

A 45/0 color instrument is used in situations where we want to measure color the way our eye sees color. Gloss levels influence the way our eye sees color. A high gloss sample appears darker to our eye than a matte gloss sample with the same pigment concentration. A practical use for a 45/0 color instrument is to check color consistency of consumer products when appearance is a deciding factor in a product purchase.

45°circumferential illumination 0° viewing perpendicular to sample plane This simulates visual color evaluation by excluding the gloss. The advantage of circumferential illumination is to achieve more repeatable measurements results on directional and structured surfaces. Photo courtesy of BYK-Gardner.